Geography

Greenland is the largest island in the world by area, larger than New Guinea, Borneo, and Australia (which is considered a continent, not an island).

King Fahd International Airport in Saudi Arabia is the largest airport in the world by land area, covering approximately 780 square kilometers, which is larger than the other options listed.

The Caspian Sea is the largest enclosed inland body of water on Earth, often classified as the largest lake by surface area, surpassing other lakes like Superior, Victoria, and Baikal.

Russia is the largest country in the world by area, covering more than 17 million square kilometers, which is larger than China, the USA, and Canada.

Mount Everest is the highest mountain in the world, with a peak elevation of 8,848.86 meters (29,031.7 feet) above sea level, surpassing K2, Kangchenjunga, and Makalu.

The Sahara Desert is the largest hot desert in the world, covering much of North Africa. While Antarctica is technically the largest desert overall, among the options given, the Sahara is the largest.

Asia is the largest continent in the world by both area and population, making it the correct answer.

Australia is the smallest continent in the world by land area, smaller than Europe, Antarctica, and South America.

The Pacific Ocean is the largest ocean in the world, covering more area than all the other oceans combined. It is larger than the Atlantic, Indian, and Arctic Oceans.

The Nile River is generally recognized as the longest river in the world, with a length of about 6,650 km (4,132 miles). While some recent studies suggest the Amazon River could be longer depending on measurement criteria, the majority of authoritative sources, including Britannica and Science Focus, list the Nile as the longest. This remains the most widely accepted answer in educational and reference contexts.